Web specifications support in Opera products

The data in the following tables is a high-level overview of web specifications supported in various Opera products. Further information will be added as it becomes available.

Opera desktop, device, and mobile products

Opera products use and depend upon various parts of the Opera Presto rendering engine and its web specification features. It is important to note that while the latest Opera Presto rendering engine has incorporated new web specification features, they may not have been added to the latest released versions of Opera products.

The Opera user agent string

Opera products will identify which Opera Presto version and core-integration-point they are using in their user agent string. Depending on your Opera product, the Opera user agent string is placed in the "About Opera" page, found by typing opera:about in the address bar, or by clicking "Help > About Opera" in the Menu.

Notes:

Partial gradients support means that only linear gradients are supported.

Up until Presto 2.10, Gradients in Opera use the -o- vendor prefix.

Up until Presto 2.10, 2D Transforms in Opera use the -o- vendor prefix.

Up until Presto 2.10, Transitions in Opera use the -o- vendor prefix.

Up until Presto 2.10, Animations in Opera use the -o- vendor prefix.

From Presto 2.10 onward, animatable properties are extended to also include background-position, border-bottom-color, border-color, border-left-color, border-right-color, border-top-color, and text-shadow, and step-start, step-end and steps timing functions for transition-timing-function are supported as well.